Alright kiddo, so have you ever seen a fire before? It's pretty dangerous and can hurt people and buildings.
Well, there's a tool called a fire flapper that can help control the fire and keep it from spreading. It looks like a big metal flap that firefighters can use to put out the flames.
They use it by waving the flapper back and forth over the fire to smother it and cut off its access to oxygen. When there's not enough oxygen, the fire can't keep burning and it eventually goes out.
The fire flapper is really helpful because it's easy to use, and it doesn't require any water or chemicals like other firefighting tools. It's also pretty light so firefighters can carry it with them wherever they go.
So remember, if you ever see a fire flapper, it means there's a brave firefighter nearby working hard to keep everyone safe from the flames.